Hand-held master controller for a railroad locomotive



FIG. 1 is a front and upper left perspective view of a hand-held master controller for a railroad locomotive showing our new design. The broken line showing of the power cord and the display and actuator indicia is included for the purpose of illustrating environmental elements only and forms no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a rear elevational view thereof. 

The ornamental design for a hand-held master controller for a railroad locomotive, as shown and described. 